S, N Co-Doped Graphene Quantum Dot/TiO2 Composites for Efficient Photocatalytic Hydrogen Generation
Abstract S, N co-doped graphene quantum dots (S,N-GQDs) coupled with P25 (TiO2) (S,N-GQD/P25) have been prepared via simply hydrothermal method. The as-prepared S,N-GQD/P25 composites exhibited excellent photocatalytic hydrogen generation activities, with a significantly extended light absorption ra...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-06-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-017-2101-1 |
| _version_ | 1797711035167145984 |
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| author | He Xie Chengyi Hou Hongzhi Wang Qinghong Zhang Yaogang Li |
| author_facet | He Xie Chengyi Hou Hongzhi Wang Qinghong Zhang Yaogang Li |
| author_sort | He Xie |
| collection | DOAJ |
| description | Abstract S, N co-doped graphene quantum dots (S,N-GQDs) coupled with P25 (TiO2) (S,N-GQD/P25) have been prepared via simply hydrothermal method. The as-prepared S,N-GQD/P25 composites exhibited excellent photocatalytic hydrogen generation activities, with a significantly extended light absorption range and superior durability without loading any noble metal cocatalyst. The photocatalytic activity of this composite under visible light (λ = 400–800 nm) was greatly improved compared with that of pure P25. This remarkable improvement in photocatalytic activity of the S,N-GQD/P25 composites can be attributed to that S,N-GQDs play a key role to enhance visible light absorption and facilitate the separation and transfer of photogenerated electrons and holes. Generally, this work could provide new insights into the facile fabrication of photocatalytic composites as high performance photocatalysts. |
| first_indexed | 2024-03-12T07:01:07Z |
| format | Article |
| id | doaj.art-66534d167d0a4b5bb8bd389b91b70318 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T07:01:07Z |
| publishDate | 2017-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-66534d167d0a4b5bb8bd389b91b703182023-09-02T23:44:09ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2017-06-011211810.1186/s11671-017-2101-1S, N Co-Doped Graphene Quantum Dot/TiO2 Composites for Efficient Photocatalytic Hydrogen GenerationHe Xie0Chengyi Hou1Hongzhi Wang2Qinghong Zhang3Yaogang Li4State Key Laboratory of Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua UniversityState Key Laboratory of Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua UniversityState Key Laboratory of Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua UniversityEngineering Research Center of Advanced Glasses Manufacturing Technology, College of Materials Science and Engineering, Donghua UniversityState Key Laboratory of Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua UniversityAbstract S, N co-doped graphene quantum dots (S,N-GQDs) coupled with P25 (TiO2) (S,N-GQD/P25) have been prepared via simply hydrothermal method. The as-prepared S,N-GQD/P25 composites exhibited excellent photocatalytic hydrogen generation activities, with a significantly extended light absorption range and superior durability without loading any noble metal cocatalyst. The photocatalytic activity of this composite under visible light (λ = 400–800 nm) was greatly improved compared with that of pure P25. This remarkable improvement in photocatalytic activity of the S,N-GQD/P25 composites can be attributed to that S,N-GQDs play a key role to enhance visible light absorption and facilitate the separation and transfer of photogenerated electrons and holes. Generally, this work could provide new insights into the facile fabrication of photocatalytic composites as high performance photocatalysts.http://link.springer.com/article/10.1186/s11671-017-2101-1Graphene quantum dotsTiO2Elemental dopingPhotocatalysisHydrogen evolution |
| spellingShingle | He Xie Chengyi Hou Hongzhi Wang Qinghong Zhang Yaogang Li S, N Co-Doped Graphene Quantum Dot/TiO2 Composites for Efficient Photocatalytic Hydrogen Generation Nanoscale Research Letters Graphene quantum dots TiO2 Elemental doping Photocatalysis Hydrogen evolution |
| title | S, N Co-Doped Graphene Quantum Dot/TiO2 Composites for Efficient Photocatalytic Hydrogen Generation |
| title_full | S, N Co-Doped Graphene Quantum Dot/TiO2 Composites for Efficient Photocatalytic Hydrogen Generation |
| title_fullStr | S, N Co-Doped Graphene Quantum Dot/TiO2 Composites for Efficient Photocatalytic Hydrogen Generation |
| title_full_unstemmed | S, N Co-Doped Graphene Quantum Dot/TiO2 Composites for Efficient Photocatalytic Hydrogen Generation |
| title_short | S, N Co-Doped Graphene Quantum Dot/TiO2 Composites for Efficient Photocatalytic Hydrogen Generation |
| title_sort | s n co doped graphene quantum dot tio2 composites for efficient photocatalytic hydrogen generation |
| topic | Graphene quantum dots TiO2 Elemental doping Photocatalysis Hydrogen evolution |
| url | http://link.springer.com/article/10.1186/s11671-017-2101-1 |
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